
PCM-3353 User Manual 36
Table A.18: CN30, COM1/2/3/4
Part Number 1653220260
Footprint BH20X2SV-2.00mm
Description
Pin Pin Name Signal Type Signal Level
1 DCD#1 IN -3 ~ -12 V, +3 ~ +12 V
2 DSR#1 IN -3 ~ -12 V, +3 ~ +12 V
3 RXD1 IN -3 ~ -12 V, +3 ~ +12 V
4 RTS#1 I/O -3 ~ -12 V, +3 ~ +12 V
5 TXD1 OUT -3 ~ -12 V, +3 ~ +12 V
6 CTS#1 IN -3 ~ -12 V, +3 ~ +12 V
7 DTR#1 I/O -3 ~ -12 V, +3 ~ +12 V
8 RI#1 IN -3 ~ -12 V, +3 ~ +12 V
9GNDGND-
10 GND GND -
11 DCD#2 In -3~-12V, +3~+12V
12 DSR#2 In -3~-12V, +3~+12V
13 RXD2 In -3~-12V, +3~+12V
14 RTS#2 I/O -3~-12V, +3~+12V
15 TXD2 Out -3~-12V, +3~+12V
16 CTS#2 In -3~-12V, +3~+12V
17 DTR#2 I/O -3~-12V, +3~+12V
18 RI#2 In -3~-12V, +3~+12V
19 GND GND -
20 GND GND -
21 DCD#3 In -3 ~ -12 V, +3 ~ +12 V
22 DSR#3 In -3 ~ -12 V, +3 ~ +12 V
23 RXD3 In -3 ~ -12 V, +3 ~ +12 V
24 RTS#3 I/O -3 ~ -12 V, +3 ~ +12 V
25 TXD3 Out -3 ~ -12 V, +3 ~ +12 V
26 CTS#3 In -3 ~ -12 V, +3 ~ +12 V
27 DTR#3 I/O -3 ~ -12 V, +3 ~ +12 V
28 RI#3 In -3 ~ -12 V, +3 ~ +12 V
29 GND GND -
30 GND GND -
31 DCD#4 In -3 ~ -12 V, +3 ~ +12 V
32 DSR#4 In -3 ~ -12 V, +3 ~ +12 V
33 RXD4 In -3 ~ -12 V, +3 ~ +12 V
34 RTS#4 I/O -3 ~ -12 V, +3 ~ +12 V
35 TXD4 Out -3 ~ -12 V, +3 ~ +12 V
36 CTS#4 In -3 ~ -12 V, +3 ~ +12 V
37 DTR#4 I/O -3 ~ -12 V, +3 ~ +12 V
38 RI#4 In -3 ~ -12 V, +3 ~ +12 V
440
39 3
38
37 1
2
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